how many protons are in an atom of strontium - 90? answer: a 2 b 38 c 8…

how many protons are in an atom of strontium - 90? answer: a 2 b 38 c 87.62 d 90

Brief Explanations

The atomic number of strontium is 38. The number of protons in an atom is equal to its atomic number. So, an atom of strontium - 90 has 38 protons.

B. 38